00573nam a2200193Ia 4500003000400000008004100004020001500045040001600060082002000076100001800096245009000114700001500204260005500219300001700274650002400291650002500315650001400340650002500354GCL140319s9999    xx            000 0 eng d  a8173910383  aGCL / cGCL04aREFb370.3bR M1 aPRAKASH, RAVI10aMODERN ENCYCLOPAEDIA OF SCIENCE TEACHING : bCONCEPT AND TECHNIQUES / cPRAKASH, RAVI1 aRATHO, T.N  aالهند : bKANISHKA PUBLISHING HOUSE ، c1994  a ؛ c19 cm.04aEDUCATION - SCIENCE04aEDUCATION - PLANNING04aEDUCATION04aEDUCATION - RESEARCH